Mixed flue gas blendedwith air and dimethyl ether and preparation method thereof

Abstract

A mixture gas mixed with air-mixed dimethyl ether is prepared by mixing 10 to 40%vol air-mixed dimethyl ether with 60 to 90%vol other gases, wherein the air-mixed dimethyl ether is prepared by mixing 50 to 70%vol dimethyl ether with 30 to 50%vol air. The preparation method of the mixture gas comprises the following steps of: filtering the liquid dimethyl ether to remove impurities, feeding the filtered liquid dimethyl ether into a thermal-compensation vaporizer for vaporization, mixing the vaporized dimethyl ether with air at equal pressure to obtain air-mixed dimethyl ethyl, and mixing the air-mixed dimethyl ethyl with other gases at equal pressure to obtain the mixture gas. By mixing the air-mixed dimethyl ethyl, the mixture gas of the invention has effectively improved heat value and supply amount, which provides an effective path for relieving the current energy crisis condition.

Description

technical field [0001] The invention relates to a gas, in particular to a mixed gas mixed with mixed dimethyl ether and a preparation method thereof. Background technique [0002] There are not many recoverable oil resources on the earth's continental shelf, which can only be used by human beings for decades. This has led to soaring oil prices in recent years, which is affecting the economic development of countries all over the world. Although coal can be mined by humans for hundreds of years, using coal as fuel will emit a large amount of harmful gases and cause serious pollution to the atmosphere. Therefore, countries all over the world are looking for alternative energy sources, and from the perspective of environmental protection, this alternative energy source is required to be a clean fuel that only emits a small amount of harmful gases. [0003] Dimethyl ether (DME) is a non-toxic oxygen-containing fuel, which is gaseous at normal temperature and pressure, and can ...

AI Technical Summary

Problems solved by technology

[0006] 1. Coal is solid and difficult to transport by pipeline;

[0007] 2. There is a lot of ash in coal, which will increase the transportation cost, and there will be ash disposal problems after combustion;

[0008] 3. Combustion produces a large amount of SO X , NO X and other harmful gases, and produce a large amount of coal dust, causing serious pollution to the atmosphere and the environment. In order to prevent pollution, a large amount of investment must be spent on treatment;

[0009] 4. Lignite with low calorific value, sub-bituminous coal, etc. cannot be well utilized

In order to make full use of the energy in the local or nearby areas, almost every county and city had one or two small nitrogen fertilizer plants developed in the 1970s and 1980s. After adjustments in the 1990s, half of them still exist. , that is, there is at least one small nitrogen fertilizer plant in every two counties and cities, and some counties and cities use the residual gas from small nitrogen fertilizer plants as the pipeline gas source for towns. However, with the expansion of urban areas and the increase in population, the original gas source has been Can't meet supply

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